What Causes Backache And Dry Mouth After Taking Lexapro?

I ve been dealing with depression for the past 3 years. I m 62. My internist prescribed Welbutrin 150 mg. It worked for a while . I then went to see a psychiatrist who increased it to 300 mg. It helped on and off but was feeling sad and had repeated thoughts of hopelessness. Started with a Psychologist it helped for a while. Went to a support group that taught me that mental illness is a disease and that I need to learn who to deal with my illness. 2 weeks ago I started taking adderol . 1 x 10 MG per day. This week Lexapro was added . After taking one 10 mg with in 5 hours I felt like crap, back ache, dry mouth and and overall lousy feeling in my head. my Doctor told me to stop for a couple of days. I hate taking meds that overall are not helping much . am thinking going to see and East West Md at UCLA. Maybe holistic meds and Accupuncture could help. Please advise thanks. Need Help.